Pharmaceutical compositions comprising meloxicam

ABSTRACT

Disclosed herein are compositions comprising an NSAID such as meloxicam and/or rizatriptan in combination with a cyclodextrin and/or a carbonate or a bicarbonate. These compositions may be orally administered, for example, to improve the bioavailability or pharmacokinetics of the NSAID for the treatment of pain such as migraine, arthritis, and other conditions. Also disclosed herein are methods of treating pain, such as migraine, comprising administering meloxicam and rizatriptan to a human being suffering from pain, such as migraine. For migraine, these methods may be particularly useful when the meloxicam and rizatriptan are administered while the human being is suffering from an acute attack of migraine pain or migraine aura. In some embodiments, the combination of meloxicam and rizatriptan may be administered in a manner that results in a Tmax of meloxicam of 3 hours or less.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of U.S. patent application Ser. No. 16/002,865, filed Jun. 7, 2018; which is a continuation-in-part of U.S. patent application Ser. No. 15/976,800, filed May 10, 2018; which claims benefit of U.S. Prov. Pat. App. Nos. 62/504,105, filed May 10, 2017; and 62/536,466, filed Jul. 25, 2017; U.S. patent application Ser. No. 15/976,800 is also a continuation-in-part of the International Pat. App. No. PCT/US2018/012433, filed Jan. 4, 2018; which claims the benefit of U.S. Prov. Pat. App. Nos. 62/442,136, filed Jan. 4, 2017; 62/504,105, filed May 10, 2017; and 62/536,466, filed Jul. 25, 2017; U.S. patent application Ser. No. 16/002,865 also claims benefit of U.S. Prov. Pat. App. No. 62/680,956, filed Jun. 5, 2018; any of the above applications, U.S. patents issued from, or U.S. publications of any of the above applications are incorporated by reference in their entirety.

BACKGROUND

Meloxicam, which has the structure:

is a nonsteroidal anti-inflammatory (NSAID) drug that exhibits anti-inflammatory, analgesic, and antipyretic activities. The meloxicam mechanism of action may be related to prostaglandin synthetase (cyclo-oxygenase, COX) inhibition which is involved in the initial steps of the arachidonic acid cascade, resulting in the reduced formation of prostaglandins, thromboxanes and prostacylin.

SUMMARY

Meloxicam and some other NSAIDs have poor aqueous solubility which may reduce bioavailability and slow the onset of pain relief resulting from their use. One means of increasing the solubility and bioavailability of meloxicam is through the use of cyclodextrins. Cyclodextrin (also known as cycloamyloses) are generally cyclic polysaccharides which form a bucket-like shape. Cyclodextrins help to increase bioavailability of other molecules because cyclodextrins are hydrophobic on the inside and hydrophilic on the inside which helps to facilitate the transport of molecules. The naturally occurring cyclodextrins include six, seven, and eight glucose units (α, β, and γ-cyclodextrin, respectively). However, synthetic cyclodextrins containing more or less glucose units are possible. In aqueous solutions, cyclodextrins can form complexes (i.e., an inclusion complex) with drugs by incorporating the drug into the center/hydrophobic portion of the cyclodextrin ring; although cyclodextrin compounds are also known to aggregate around a drug in a micelle-type structure. This ability of cyclodextrins may allow them to act as carriers to increase the bioavailability of less soluble drugs.

Some embodiments include an inclusion complex of meloxicam in a cyclodextrin.

Some embodiments include a dosage form comprising: 1) an inclusion complex of meloxicam and a cyclodextrin, or 2) meloxicam and a carbonate or a bicarbonate.

Some embodiments include a method of administering meloxicam orally, comprising orally administering a dosage form described herein to a patient in need of treatment.

Some embodiments include a method of administering meloxicam intravenously, comprising intravenously administering a dosage form described herein to a patient in need of treatment.

Disclosed herein are formulations for an inclusion complex of cyclodextrin and meloxicam with bicarbonate and methods of use thereof.

Disclosed herein are formulations and methods for delivering meloxicam with cyclodextrin to a subject by oral, enteral, intravenous, intramuscular, subcutaneous, intranasal, or other parenteral means.

Disclosed also are methods for treating pain and pain associated with conditions by delivering a dosage form with meloxicam, cyclodextrin, and bicarbonate by oral, enteral, intravenous, intramuscular, subcutaneous, intranasal, or other parenteral means to a subject.

A combination of rizatriptan and meloxicam (referred to herein for convenience as a “subject combination”) may be used to treat a variety of pain conditions.

Rizatriptan has the structure as shown below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a depiction of the results described in Example 2 and contained in Table 6.

FIG. 2 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 3 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 4 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 5 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 6 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 7 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 8 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 9 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 10 is another depiction of the results described in Example 2 and contained in Table 6.

FIG. 11 is a plot of meloxicam plasma concentration at various time points over the first 24 hours for an embodiment of a dosage form described herein and a commercially available meloxicam dosage form.

FIG. 12 is a plot of meloxicam plasma concentration at various time points over the first 24 hours for a dosage form of Meloxicam/Rizatriptan described in Example 6 and a commercially available meloxicam dosage form.

FIG. 13 is a plot of rizatriptan plasma concentration at various time points over the first 12 hours for a dosage form of Meloxicam/Rizatriptan described in Example 6 and a commercially available meloxicam dosage form.

DETAILED DESCRIPTION

Provided herein are dosage forms with NSAIDs (such as meloxicam) and cyclodextrin (optionally in an inclusion complex), and/or bicarbonate, and methods of treatment using the dosage form.

A dosage form may be given enterally including, but not limited to, oral, sublingual, or rectal delivery, or parenterally including, but not limited to, intravenous, intramuscular, intranasal, or subcutaneous delivery.

Some methods include administration of a product that combines an NSAID that is formulated with: a) a cyclodextrin and/or b) a buffering agent. In some embodiments, the method involves treating a patient with a pharmaceutical formulation comprising meloxicam and a cyclodextrin and/or a carbonate/bicarbonate. Method embodiments may also include treating a patient to increase the bioavailability of meloxicam in the patient or increase the rate at which the meloxicam becomes bioavailable.

The combination of meloxicam, a cyclodextrin (such as SBEβCD), and a bicarbonate (such as sodium bicarbonate) may substantially increase the solubility and rate of absorption of meloxicam after oral administration, while maintaining its extended plasma concentration half-life in mammals, such as humans after oral administration.

The combination of meloxicam, a cyclodextrin (such as SBEβCD), and a bicarbonate (such as sodium bicarbonate) may substantially increase the oral bioavailability of meloxicam in mammals, such as humans, after oral administration.

Unless otherwise indicated, any reference to a compound herein, such as meloxicam or rizatriptan, by structure, name, or any other means, includes pharmaceutically acceptable salts, alternate solid forms, such as polymorphs, solvates, hydrates, enantiomers, tautomers, deuterium-modified forms, or any other chemical species, such as precursors, prodrugs, or any other chemical species that may rapidly convert to a compound described herein under conditions in which the compounds are used as described herein.

A subject combination may be given enterally including, but not limited to, oral, sublingual, or rectal delivery, or parenterally including, but not limited to, intravenous, intramuscular, intranasal, or subcutaneous delivery. In some embodiments, both meloxicam and rizatriptan are administered orally. In some embodiments, meloxicam is administered intravenously and rizatriptan is administered orally. In some embodiments, meloxicam is administered intramuscularly and rizatriptan is administered orally.

Normally, the combination of meloxicam and rizatriptan is administered so that the human being receives the meloxicam and rizatriptan within a short period of time with respect to one another. For example, the meloxicam and rizatriptan may be administered within about 2 hours, within about 1 hour, within about 30 minutes, within about 20 minutes, within about 15 minutes, within about 10 minutes, within about 5 minutes, or within about 1 minute of one another. In some embodiments, the meloxicam and rizatriptan are administered simultaneously, which for the purpose of this disclosure includes administration within about 5 minutes. In some embodiments, the meloxicam and rizatriptan are administered in a single dosage form.

The term “treating” or “treatment” broadly includes any kind of treatment activity, including the diagnosis, cure, mitigation, or prevention of disease in man or other animals, or any activity that otherwise affects the structure or any function of the body of man or other animals.

The dosage form or the subject combination may be used to treat, or provide relief of, any type of pain including, but not limited to, migraine and other types of headache, inflammatory pain, musculoskeletal pain, neuropathic pain, chronic pain, acute pain, localized pain, systemic pain, cancer-related pain, acute pain, pain due to injury, pain due to illness (e.g., fever), post-operative pain, etc. In some instances, pain relief may be palliative, or pain relief may be provided independent of improvement of the disease or condition or the underlying cause of the disease or condition. For example, although the underlying disease may not improve, or may continue to progress, an individual suffering from the disease may experience pain relief. In some embodiments, the pain affects a muscle, nerve, cartilage, bone, ligament, tendon, tendon sheaths, bursae, or joint.

Migraine is a disabling neurological disorder characterized by recurrent attacks of pulsating head pain accompanied by nausea and sensitivity to light and sound. This pain may be moderate to severe, but is often severe and incapacitating, requiring bed rest. The headaches may affect one half of the head, may be pulsating in nature, and may last from 2 to 72 hours. Associated symptoms may include nausea, vomiting, and sensitivity to light (photophobia), sound (phonophobia), or smell. The pain can be made worse by physical activity. Migraines may be associated with an aura, which may be a short period of visual disturbance which signals that the headache will soon occur.

In some embodiments, the human being who is being treated for migraine pain suffers from allodynia with their migraine attacks. Allodynia, which is pain from normally non-painful stimuli (such as brushing hair, wearing glasses, taking a shower, etc.). Patients having allodynia are believed to be less likely to respond well to triptan medications.

Current treatments are suboptimal, with more than 70% of sufferers reporting dissatisfaction with existing acute treatments. The most commonly reported reasons for patient dissatisfaction are slow onset of pain relief, inconsistent pain relief, and recurrence of pain during the same day. Suboptimal acute treatment is associated with a significantly increased risk of new-onset chronic migraine, which may be prevented by improving acute treatment outcomes.

Administering a subject combination to a human being suffering from migraine, such as an acute attack of migraine pain or aura, may quickly result in a reduction in a migraine symptom, such as pain, nausea, vomiting, photophobia, or phonophobia, such as at or within about 5 minutes (intended as a shorthand for “at about 5 minutes, or within about 5 minutes”), at or within about 10 minutes, at or within about 30 minutes, at or within about 1 hour, at or within about 90 minutes, at or within about 2 hours, at or within about 2.5 hours, or at or within about 3 hours. In some embodiments, a human being experiences a reduction of, or complete relief from, pain, such as headache pain or migraine pain, nausea, vomiting, photophobia, and/or phonophobia, at or within about 1 hour, at or within about 90 minutes, at or within about 2 hours, at or within about 2.5 hours, or at or within about 3 hours. In some embodiments, the relief experienced, is greater than would be experienced by receiving the same amount of rizatriptan without meloxicam. In some embodiments, the relief experienced, is greater than would be experienced by receiving the same amount of meloxicam without rizatriptan.

The combination of meloxicam and rizatriptan may have distinct dual mechanisms of action for the acute treatment of migraine. Meloxicam is a potent, COX-2 preferential NSAID which is limited by slow absorption. Rizatriptan is a potent 5-HT1_(B/D) agonist believed to have efficacy in migraine.

Observation of relief or reduction in a symptom at a specific period of time, such as “at 2 hours,” is useful because it allows the effectiveness of the treatment to be evaluated at a specific or consistent time point, which facilitates comparison between patients. Observation of relief or reduction in a symptom within a specific period of time, such as “within about 2 hours,” is useful because it is desirable for relief or reduction of a symptom to occur as early as possible, and specifying that relief occur within a specified time sets a guideline in which it is desirable that relief occur.

For some methods, administration of the subject combination may achieve a reduction in migraine pain, nausea, vomiting, photophobia, or phonophobia that lasts at least about one hour, at least about two hours, at least about three hours, at least about four hours, at least about six hours, at least about eight hours, about 8-24 hours, about 24 hours, or more than 24 hours.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater pain relief than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater pain relief than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater pain relief than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater pain relief than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from nausea than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from nausea than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from nausea than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from nausea than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from vomiting than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from vomiting than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from vomiting than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from vomiting than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam. In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from photophobia than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from photophobia than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from photophobia than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from photophobia than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from phonophobia than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from phonophobia than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from phonophobia than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from phonophobia than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the human being receiving the subject combination has a history of inadequate response to prior migraine treatments. For example, if the human being is asked whether he or she was pain-free within two hours of treatment for most attacks, and given the option of answering “never,” “rarely,” “less than half the time,” or “half the time or more;” and the human being answers “never,” “rarely,” or “less than half the time,” then the human being has had an inadequate response to the treatment. Similarly, if the human being is asked whether one dose of medication usually relieved the human being's headache and kept it away for at least 24 hours, and given the option of answering “never,” “rarely,” “less than half the time,” or “half the time or more;” and the human being answers “never,” “rarely,” or “less than half the time,” then the human being has had an inadequate response to the treatment.

In some embodiments, the human being receiving the subject combination has indicated that he or she was “never” pain-free within two hours of treatment for most attacks. In some embodiments, the human being receiving the subject combination has indicated that he or she was “rarely” pain-free within two hours of treatment for most attacks. In some embodiments, the human being receiving the subject combination has indicated that he or she was pain-free within two hours of treatment for most attacks “less than half the time.”

In some embodiments, the human being receiving the subject combination has indicated that one dose of medication “never” relieved the respondent's headache and kept it away for at least 24 hours. In some embodiments, the human being receiving the subject combination has indicated that one dose of medication “rarely” relieved the respondent's headache and kept it away for at least 24 hours. In some embodiments, the human being receiving the subject combination has indicated that one dose of medication relieved the respondent's headache and kept it away for at least 24 hours “less than half the time.”

In some embodiments, the dosage form may also be administered to relieve arthritis pain. In some embodiments the dosage form may be administered to relieve other signs and/or symptoms of arthritis. Examples of arthritis include, but are not limited to, rheumatoid arthritis, juvenile rheumatoid arthritis (pauciarticular and polyarticular course), osteoarthritis, erosive osteoarthritis, sero-negative (non-rheumatoid), arthropathies, non-articular rheumatism, peri-articular disorders, axial spondyloarthritis, transient osteoarthritis of the hip, vertebral crush fractures, osteoporosis, and neuropathic arthropathies including Charcot's foot, axial spondyloarthritis including ankylosing spondylitis, and SAPHO syndrome. In other embodiments, the arthritis pain may be chronic or acute. In some embodiments the dosage form may be administered to relief the signs and/or symptoms of an arthritis including but not limited osteoarthritis

For some methods, administration of the dosage form may achieve a reduction in pain that lasts at least about one hour, two hours, three hours, four hours, six hours, at least about eight hours, about eight to about 24 hours, or about 24 hours. In other embodiments, administration of the dosage form may achieve a reduction in pain that is observed at about 10 minutes, at about 30 minutes, at about one hour, at about two hours, at about three hours, at about four hours, at about five hours, at about six hours, at less than 15 minutes, at less than 20 minutes, 30 minutes, at less than one hour, at less than two hours, at less than three hours, at about 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, or 60 minutes, or other time period bound by these ranges, after administration of the dosage form.

In some embodiments, the dosage form may also be administered to relieve neuropathic pain, including diabetic peripheral neuropathy, post-herpetic neuralgia, trigeminal neuralgia, monoradiculopathies, phantom limb pain, sciatica, pudendal neuralgia, and central pain. Other causes of neuropathic pain may include, but are not limited to, cancer-related pain, lumbar nerve root compression, spinal cord injury, post-stroke pain, central multiple sclerosis pain, HIV-associated neuropathy, and radio-therapy or chemo-therapy associated neuropathy. The neuropathic pain treated may be chronic or acute.

In some methods, the dosage form may be administered to relieve inflammatory pain including inflammatory musculoskeletal pain, pain due to injury, arthritis pain, and complex regional pain syndrome. In other embodiments, the inflammatory pain may be chronic or acute.

Arthritis refers to inflammatory joint diseases that can be associated with pain. Examples of arthritis pain include but are not limited to pain associated with osteoarthritis, erosive osteoarthritis, rheumatoid arthritis, juvenile rheumatoid arthritis, sero-negative (non-rheumatoid) arthropathies, non-articular rheumatism, peri-articular disorders, neuropathic arthropathies including Charcot's foot, axial spondyloarthritis including ankylosing spondylitis, and SAPHO syndrome. The inflammatory joint disease treated may be chronic or acute.

For some methods, the meloxicam may be administered to relieve musculoskeletal pain. Examples of musculoskeletal pain may include, but are not limited to, back pain, low back pain (e.g., lumbosacral pain), neck pain, infection, cramps, tendonitis, epidondylitis, carpal tunnel syndrome, joint pain, fibromyalgia, pain due to injury, Tunnel syndromes, pain associated with bone fractures, sprains, fibrous dysplasia, osteogenesis imperfecta, Paget's disease of bone, transient osteoporosis, and transient osteoporosis of the hip. In other embodiments, the musculoskeletal pain may be chronic or acute.

For some methods, administration of the dosage form or the subject combination may achieve a reduction in pain that lasts at least about one hour, at least about two hours, at least about three hours, at least about four hours, at least about six hours, at least about eight hours, about 8 to about 24 hours, or about 24 hours. In other embodiments, administration of the subject combination may achieve a reduction in pain that is observed at about 10 minutes, at about 30 minutes, at about one hour, at about two hours, at about three hours, at about four hours, at about five hours, at about six hours, at or within about 5 minutes, at or within about 10 minutes, at or within about 15 minutes, at or within about 20 minutes, at or within about 25 minutes, at or within about 30 minutes, at or within about 35 minutes, at or within about 40 minutes, at or within about 45 minutes, at or within about 50 minutes, or at or within about 60 minutes, at two hours or less, at three hours or less, or other time period bound by these ranges, after administration of the subject combination.

A human being that is treated for a disease or condition with the dosage forms described herein may be of any age. For example the person may have an age of about 10 years to about 90 years, about 20 years to about 80 years, about 30 years to about 75 years, about 40 years to about 70 years, about 1 year to about 16 years, about 80 years to about 95 years, about 18 years or more, about 20 years or more, about 25 years or more, about 30 years or more, about 40 years or more, about 45 years or more, about 50 years or more, about 55 years or more, about 60 years or more, about 65 years or more, or any other age in a range bounded by, or between, these values.

In some embodiments, a human being that is treated for a disease or condition with a dosage form comprising meloxicam or another NSAID has suffered from the pain or condition associated with the pain for at least 1 day, at least one week, at least 2 weeks, at least 1 month, at least 6 weeks, at least 2 months, at least 3 months, at least 6 months, or at least 1 year, or any duration in a range bounded by, or between, these values.

A cyclodextrin used in a dosage form with meloxicam could include a cyclodextrin, a cyclodextrin derivative, and/or a salt thereof. An inclusion complex of meloxicam and cyclodextrin may be more water-soluble relative to the non-complexed meloxicam. The cyclodextrin may be a naturally-occurring cyclodextrin (e.g., α, β, or γ-cyclodextrins) or a synthetic cyclodextrin. In some embodiments, α-cyclodextrins, derivatives, or salts thereof may be used. α-Cyclodextrins may include, but are not limited to, (2,3,6-tri-O-acetyl)-α-cyclodextrin, (2,3,6-tri-O-methyl)-α-cyclodextrin, (2,3,6-tri-O-octyl)-α-cyclodextrin, 6-bromo-6-deoxy-α-cyclodextrin, 6-iodo-6-deoxy-α-cyclodextrin, (6-O-tertbutyl-dimethylsilyl)-α-cyclodextrin, butyl-α-cyclodextrin, succinyl-α-cyclodextrin, (2-hydroxypropyl)-α-cyclodextrin, or combinations thereof.

In some embodiments, β-cyclodextrins, derivatives, or salts thereof may be used. β-cyclodextrins may include, but are not limited to, hydroxypropyl-β-cyclodextrin, 6-monodeoxy-6-monoamino-β-cyclodextrin, glucosyl-β-cyclodextrin, maltosyl-β-cyclodextrin, 6-O-α-D-glucosyl-β-cyclodextrin, 6-O-α-maltosyl-β-cyclodextrin, 6-azido-6-deoxy-β-cyclodextrin, (2,3-di-O-acetyl-6-O-sulfo)-β-cyclodextrin, methyl-β-cyclodextrin, dimethyl-β-cyclodextrin (DMβCD), trimethyl-β-cyclodextrin (TMβCD), (2,3-di-O-methyl-6-O-sulfo)-β-cyclodextrin, (2,6-di-O-methyl)-β-cyclodextrin, (2,6-di-O-ethyl)-β-cyclodextrin, (2,3,6-tri-O-methyl)-β-cyclodextrin, (2,3,6-tri-O-acetyl)-β-cyclodextrin, -(2,3,6-tri-O-benzoyl)-β-cyclodextrin, (2,3,6-tri-O-ethyl)-β-cyclodextrin, 6-iodo-6-deoxy-β-cyclodextrin, 6-(dimethyl-tert-butylsilyl)-6-deoxy-β-cyclodextrin, 6-bromo-6-deoxy-β-cyclodextrin, monoacetyl-β-cyclodextrin, diacetyl-β-cyclodextrin, triacetyl-β-cyclodextrin, (3-O-acetyl-2,6-di-O-methyl)-β-cyclodextrin, (6-O-maltosyl)-β-cyclodextrin, (6-O-sulfo)-β-cyclodextrin, (6-O-t-butyldimethylsilyl-2,3-di-O-acetyl)-β-cyclodextrin, succinyl-(2-hydroxypropyl)-β-cyclodextrin, (2,6-di-O-)ethyl-β-cyclodextrin, (2-carboxyethyl)-β-cyclodextrin (CMEβCD), hydroxyethyl-β-cyclodextrin (HEβCD), (2-hydroxypropyl)-β-cyclodextrin, (2-hydroxypropyl)-β-cyclodextrin (HPβCD), (3-hydroxypropyl)-β-cyclodextrin (3HPβCD), (2,3-hydroxypropyl)-β-cyclodextrin (DHPβCD), butyl-β-cyclodextrin, methyl-β-cyclodextrin, silyl((6-O-tert-butyldimethyl)-2,3,-di-O-acetyl)-β-cyclodextrin, succinyl-β-cyclodextrin, (2-hydroxyisobutyl)-β-cyclodextrin, randomly methylated-β-cyclodextrin, branched-β-cyclodextrin, or combinations thereof.

In other embodiments, a β-cyclodextrin may be a sulfoalkyl ether cyclodextrin, derivative, or salt thereof. Examples of sulfoalkyl ether cyclodextrin derivatives may include, but are not limited to, sulfobutyl ether-β-cyclodextrin (e.g., SBEβCD, betadex, CAPTISOL®). In some embodiments, a SBEβCD may have about 4-8, about 5-8, about 4-7, about 6-7, or about 6.5 sulfobutyl ether groups per cyclodextrin molecule.

In some embodiments, γ-cyclodextrins, derivatives, or salts thereof may be used. γ-cyclodextrins may include carboxymethyl-γ-cyclodextrin, (2,3,6-tri-O-acetyl)-γ-cyclodextrin, (2,3,6-tri-O-methyl)-γ-cyclodextrin, (2,6-di-O-pentyl)-γ-cyclodextrin, 6-(dimethyl-tert-butylsilyl)-6-deoxy-γ-cyclodextrin, 6-bromo-6-deoxy-γ-cyclodextrin, 6-iodo-6-deoxy-γ-cyclodextrin, (6-O-t-butyldimethylsilyl)-γ-cyclodextrin, succinyl-γ-cyclodextrin, hydroxypropyl-γ-cyclodextrin (2-hydroxypropyl)-γ-cyclodextrin, acetyl-γ-cyclodextrin, butyl-γ-cyclodextrin, or combinations thereof.

In some embodiments, the dosage form may include a bicarbonate, such as sodium bicarbonate, potassium bicarbonate, magnesium bicarbonate, calcium bicarbonate, ammonium bicarbonate, or a combination thereof. A bicarbonate may help to increase bioavailability of the meloxicam.

In other embodiments, the dosage form may include a carbonate, derivatives, or salts thereof. Examples of carbonates may include aluminum carbonate, ammonium carbonate, barium carbonate, calcium carbonate, cobalt(II) carbonate, lanthanum carbonate, lithium carbonate, magnesium carbonate, manganese(II) carbonate, potassium carbonate, sodium carbonate, or combinations thereof.

In some embodiments, enhanced bioavailability of the dosage form may be achieved in treating one of these conditions by administering a dosage form comprising a salt form of the meloxicam, by creating an inclusion complex with meloxicam and cyclodextrin, and/or by including a bicarbonate. This may allow a reduced molar amount of the meloxicam to be used as compared to other meloxicam dosage forms.

Unless otherwise indicated, any reference to a compound herein, such as meloxicam or a cyclodextrin, by structure, name, or any other means, includes pharmaceutically acceptable salts, alternate solid forms, such as polymorphs, solvates, hydrates, enantiomers, tautomers, deuterium-modified forms, or any other chemical species that may rapidly convert to a compound described herein under conditions in which the compounds are used as described herein.

In some embodiments, use of a cyclodextrin, a carbonate, or a bicarbonate may improve the oral bioavailability of meloxicam by at least about 10%, at least about 20%, at least about 30%, at least about 40%, at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90%, up to about 100%, up to about 200%, or any amount in a range bounded by, or between, these values as compared to administration of meloxicam alone.

Due to the improved bioavailability, the dosage form may contain, or a subject may receive, on a molar basis, less of the meloxicam than would otherwise be administered. For example, a dosage form may contain, or a mammal may receive, at least about 10 mole % less, at least about 20 mole % less, at least about 30 mole % less, at least about 40 mole % less, at least about 50 mole % less, at least about 60 mole % less, at least about 70 mole % less, at least about 80 mole % less, at least about 85 mole % less, and/or up to about 90 mole % less, 95 mole % less, or any amount in a range bounded by, or between, these values as would otherwise be administered of meloxicam.

In other embodiments, use of other NSAIDs, opioids, or other pain medications may be reduced by at least about 5%, at least about 10%, at least about 15%, at least about 20%, at least about 25%, at least about 30%, at least about 35%, at least about 40%, at least about 45%, at least about 50%, at least about 60%, at least about 70%, at least about 80%, or at least about 90%, up to about 100%, as compared to the use of other NSAIDs, opioids or other pain medications without administration of meloxicam with cyclodextrin, carbonate, and/or bicarbonate.

In some embodiments, a dosage form may contain meloxicam in an amount from about 1-50 mg; about 1-10 mg; about 1-5 mg; about 10-40 mg; about 1-35 mg; about 1-25 mg; about 1-15 mg; about 5-20 mg; about 5-10 mg; about 5-15 mg; about 10-20 mg; about 20-30 mg; about 30-40 mg; about 40-50 mg; about 5 mg; about 7.5 mg; about 10 mg; about 15 mg; about 30 mg; or any amount in a range bounded by, or between, any of these values. These doses may be a safe dose for repeated administration, such as once hourly dosing to once daily dosing, twice daily dosing, dosing one to 12 times daily, doing 3, 4, 5, or 6 times daily, etc. In some embodiments, the meloxicam may be safely administered 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 times, or about 3 to about 10 times a day, once a day, or less frequently, such as once a week, once every two weeks, once a month, etc.

For some dosage forms, meloxicam forms a complex with the substituted-β-cyclodextrin or other another cyclodextrin which may be formulated into a solid dosage form. Such a dosage form may be suitable for oral administration. A meloxicam-cyclodextrin inclusion complex may also be dissolved in water or another solvent to form a parenteral formulation. However, physical mixtures of meloxicam and the substituted-β-cyclodextrin or other cyclodextrins may also be used in oral or parenteral dosage forms.

Formation of an inclusion complex of meloxicam and a cyclodextrin may help to improve the properties of a dosage form. For some inclusion complexes, the meloxicam and the cyclodextrin (e.g., SBEβCD) may have a molar ratio of about 0.5-2 (a molar ratio of 0.5 is 0.5 moles of meloxicam to 1 mole of cyclodextrin), about 0.5-0.7, about 0.6-0.8, about 0.7-0.9, about 0.8-1, about 0.9-1.1, about 1-1.2, about 1.1-1.3, about 1.2-1.4, about 1.3-1.5, about 1.4-1.6, about 1.5-1.7, about 1.6-1.8, about 1.7-1.9, about 1.8-2, about 0.8-1.2, about 1, or any ratio in a range bounded by any of these values.

For some dosage forms, a cyclodextrin (e.g., SBEβCD) may be employed in a weight ratio to the meloxicam within the range from about 1-1000 (e.g. 1 g of cyclodextrin per 1 g of meloxicam is a weight ratio of 1); about 1-20; about 1-10; about 1-15; about 2-4, about 3-5, about 4-6, about 5-7, about 6-8, about 7-9, about 8-10, or any weight ratio in a range bounded by, or between, any of these values. For some dosage forms, a cyclodextrin (e.g., SBEβCD) may be employed in a weight ratio to the meloxicam within the range from about 0.001-1 (e.g. 0.1 g of cyclodextrin per 1 g of meloxicam is a weight ratio of 0.1); about 0.01-1; about 0.05-1; about 0.1-1; about 0.2-1; about 0.3-1, about 0.4-1, about 0.5-1, about 0.6-1, about 0.7-1, about 0.8-1, or any weight ratio in a range bounded by, or between, any of these values. Each type of cyclodextrin employed may have a different ratio.

For some dosage forms, the cyclodextrin may be present in an amount from about 1-200 mg; 25-175 mg; about 50-150 mg; about 25-100 mg; about 75-150 mg; about 100-175 mg; about 20-80 mg; about 25-50 mg; about 60-100 mg; about 80-100 mg; about 80-120 mg; about 100-120 mg; about 100-140 mg; about 120-160 mg; about 140-180 mg; about 30-90 mg; about 40-80 mg; about 50-70 mg, about 55-65 mg, about 60-62 mg, or any amount in a range bounded by, or between, any of these values.

For some methods, the inclusion complex of meloxicam and cyclodextrin such as a substituted-β-cyclodextrin is delivered orally (for example by tablet, capsule, elixir, or the like). Other potential routes of administration include intravenous, intramuscular, intranasal, lyophilized parenteral, subcutaneous, transdermal, transmucosal, or through other parenteral means. The meloxicam may also be delivered alone or non-complexed with cyclodextrin.

Some dosage forms contain a bicarbonate (e.g., sodium bicarbonate) in amount from about 1-2000 mg; about 1-1000 mg; about 100-1000 mg; about 200-800 mg; about 1-500 mg; about 1-200 mg; about 1-100 mg; about 50-750 mg; about 500-1000 mg; about 100-500 mg; about 100-300 mg; about 500-1000 mg; about 300-700 mg; about 400-600 mg; about 50-250 mg; about 250-750 mg; about 100-200 mg; about 200-300 mg; about 300-400 mg; about 400-500 mg; about 410-510 mg; about 420-520 mg; about 430-530 mg; about 440-540 mg; about 450-550 mg; about 460-560 mg; about 470-570 mg; about 480-580 mg; about 490-590 mg; about 500-600 mg; about 600-700 mg; about 700-800 mg; about 800-900 mg; about 150-650 mg; about 350-850 mg; or any amount in a range bounded by, or between, any of these values.

Some dosage forms contain a carbonate in amount from about 1-1000 mg; about 1-500 mg; about 1-200 mg; about 1-100 mg; about 50-750 mg; about 500-1000 mg; about 100-500 mg; about 100-300 mg; about 200-800 mg; about 5004000 mg; about 300-700 mg; about 400-600 mg; about 50-250 mg; about 250-750 mg; about 100-200 mg; about 200-300 mg; about 300-400 mg; about 400-500 mg; about 500-600 mg; about 600-700 mg; about 700-800 mg; about 800-900 mg; about 150-650 mg; about 350-850 mg; or any amount in a range bounded by, or between, any of these values.

In some embodiments, the daily dose of meloxicam (e.g., an oral dose, a parenteral dose, etc.) is about 2-5 mg, about 2-6 mg, about 2-7 mg, about 2-8 mg, about 2-9 mg, about 2-10 mg, about 2-11 mg, about 2-12 mg, about 2-13 mg, about 2-14 mg, about 2-15 mg, about 2-16 mg, about 2-17 mg, about 2-18 mg, about 2-19 mg, about 2-20 mg, about 2-21 mg, about 2-22 mg, about 2-23 mg, about 2-24 mg, about 2-25 mg, about 2-26 mg, about 2-27 mg, about 2-28 mg, about 2-29 mg, about 2-30 mg, about 2-35 mg, about 2-40 mg, about 5-10 mg, about 10-15 mg, about 15-20 mg, about 20-25 mg, about 25-30 mg, about 30-35 mg, or any amount in a range bounded by any of these values.

In some embodiments, the weekly dose of meloxicam (e.g., an oral dose) is about 1-1000 mg; about 1-500 mg; about 10-250 mg; about 100-300 mg; about 10400 mg; about 10-150 mg; about 10-300 mg; about 20-150 mg; about 20-60 mg; about 30-70 mg; about 40-60 mg; about 50-70 mg; about 70-90 mg; about 90-110 mg; about 50 mg; about 55 mg; about 100-150 mg; about 30-100 mg; or any amount in a range bounded by, or between, any of these values. The weekly dose may be given as a single dose, given once during the week, or may be given in 2, 3, 4, 5, 6, or 7 individual doses during the week.

In some embodiments, the monthly dose of meloxicam (e.g., an oral dose), or a dose administered over a period of a month, is about 5000 mg or less; about 4000 mg or less; about 3000 mg or less; about 2000 mg or less; about 1000 mg or less; about 700 mg or less; about 600 mg or less; about 1-4000 mg; about 1-1000 mg; about 10-1000 mg; about 50-1000 mg; about 10-600 mg; about 40-600 mg; about 50-600 mg; about 40-400 mg; about 50-200 mg; about 200-240 mg; about 240-280 mg; about 280-320 mg; about 320-360 mg; about 360-400 mg; about 400-450 mg; about 450-500 mg; about 500-600 mg; about 250-350 mg; about 100-600 mg; about 40-2000 mg; about 40-800 mg; about 100-900 mg; about 100-800 mg; about 40-1000 mg; about 50-1000 mg; about 100-1000 mg; or any monthly dose in a range bounded by, or between, any of these values. A monthly dose may be given as a single dose, or as two or more individual doses administered during the month. In some embodiments, the monthly dose is administered in 2 or 3 bi-weekly doses. In some embodiments, the monthly dose is administered in 4 or 5 weekly doses. In some embodiments, the monthly dose is administered in 28 to 31 daily doses, or in 56 to 62 daily doses or more. In some embodiments, the monthly dose is administered in 5 to 15 individual doses during the month. The monthly dose may be administered for only 1 month, or may be repeatedly administered for 2 or more months.

In other embodiments, the dosage form may be administered weekly for about one, two, three, four, or more consecutive weeks, every other week or bi-weekly, or once every three weeks. This regimen may be repeated once weekly, twice in a month, three times in a month, once monthly, once every two months, once every three months, or as directed by a medical professional.

In certain embodiments, the pharmaceutical composition results in increased bioavailability (e.g., reduced T_(max), increased C_(max), increased AUC, etc.) of the meloxicam from the dosage form as compared to a dosage form containing meloxicam but not containing a cyclodextrin, an acid inhibitor, or a buffering agent (such as a bicarbonate). In some embodiments, the bioavailability of meloxicam will increase with multiple dosing. For example, the bioavailability of meloxicam in the dosage form may increase after about 1-10 days of dosing; about 2-6 days of dosing; about 3-5 days of dosing; about 4-6 days of dosing; about 5-8 days of dosing; about 5 days of dosing; about 6 days of dosing; about 7 days of dosing; about 8 days of dosing; about 10 days of dosing; about 15 days of dosing; or time in any range bounded by, or between, any of these values; as compared to the bioavailability of meloxicam in a dosage form not containing a cyclodextrin, an acid inhibitor, or a buffering agent (such as a bicarbonate).

Some of the dosage forms may result in a desired range for an area under the plasma concentration curve (AUC) of meloxicam. For example the dosage with meloxicam may result in an AUC of meloxicam of about 1-150 μg·hr/mL; about 10-30 μg·hr/mL; about 20-40 μg·hr/mL; about 30-50 μg·hr/mL; about 40-60 μg·hr/mL; about 50-70 μg·hr/mL; about 60-80 μg·hr/mL; about 70-90 μg·hr/mL; about 80-100 μg·hr/mL; about 10-100 μg·hr/mL; about 50-150 μg·hr/mL; about 25-125 μg·hr/mL; about 75-150 μg·hr/mL; about 20-50 μg·hr/mL; about 40-70 μg·hr/mL; about 60-90 μg·hr/mL; about 80-110 μg·hr/mL; about 100-130 μg·hr/mL; about 120-150 μg·hr/mL; or any AUC in a range bounded by, or between, any of these values.

Unless otherwise indicated, the AUC refers to the AUC calculated to the last measured concentration (AUC_(0-t)), such as, over a period of 6 hours (AUC₀₋₆), over a period of 12 hours (AUC₀₋₁₂), over a period of 24 hours (AUC₀₋₂₄), or extrapolated to infinity (AUC_(0-inf)).

In Example 3 below, the AUC₀₋₂₄ of meloxicam in human beings for an oral dosage form containing sodium bicarbonate and sulfobutylether β-cyclodextrin (SBEβCD) was about 27 μg·hr/mL. This dosage form contained 15 mg of meloxicam.

The 15 mg IV and intramuscular doses also provide an AUC₀₋₂₄ of meloxicam in human beings that is about 27 μg·hr/mL. The AUC of meloxicam is believed to be approximately dose proportional. So for this oral dosage form, or for an IV or intramuscular dosage form, a meloxicam dose of, for example, approximately 17 mg to about 30 mg would be expected to result in an AUC₀₋₂₄ of meloxicam of about 30-50 μg·hr/mL.

For some acute pain conditions, such as migraine and other types of headache, the AUC for a short period after oral administration, such as an AUC measured over 6 hours (or AUC₀₋₆), may be of particular interest. For example, some dosage forms may result in an AUC₀₋₆ of at least about 6 μg·hr/mL; at least about 7 μg·hr/mL; at least about 8 μg·hr/mL; at least about 9 μg·hr/mL; about 6-10 μg·hr/mL; about 7-11 μg·hr/mL; about 8-12 μg·hr/mL; about 9-13 μg·hr/mL; or any AUC in a range bounded by, or between, any of these values.

In some embodiments, the dosage form may result in a C_(max) of meloxicam of about 10-2500 ng/mL; about 100-2250 ng/mL; about 500-2000 ng/mL; about 1000-2500 ng/mL; about 1000-2000 ng/mL; about 100-900 ng/mL; about 750-1500 ng/mL; about 1250-2000 ng/mL; about 1500-2300 ng/mL; about 800-1200 ng/mL; about 1900-2400 ng/mL; about 50-500 ng/mL; about 400-950 ng/mL; about 900-1500 ng/mL; about 1100-2200 ng/mL; about 1300-1600 ng/mL; about 1200-1500 ng/mL; about 1400-2100 ng/mL; about 1500-1900 ng/mL; about 1600-2100 ng/mL; about 1700-2000 ng/mL; about 1800-2000 ng/mL; about 1900-2500 ng/mL; about 150-1700 ng/mL; about 1600-1800 ng/mL; about 1700-1900 ng/mL; about 1800-2000 ng/mL; about 1900-2100 ng/mL; about 2000-2200 ng/mL; about 2100-2300 ng/mL; about 2200-2400 ng/mL; about 2300-2500 ng/mL; about 2500-3000 ng/mL; or any C_(max) in a range bounded by, or between, any of these values.

For example, a method described herein may reduce the T_(max) of meloxicam. In some embodiments, the method may include treating a patient to achieve the T_(max) of meloxicam in the patient within about 10 minutes; about 20 minutes; about 30 minutes; about 40 minutes; about 50 minutes; about 60 minutes; about 70 minutes; about 80 minutes; about 90 minutes; about 100 minutes; about 110 minutes; about 120 minutes; about 180 minutes; about 1-10 hr; about 2-9 hr; about 3-7 hr; about 4-6 hr; about 1-5 hr; about 2-7 hr; about 3-8 hr; about 4-9 hr; about 1-4 hr; about 2-5 hr; about 3-6 hr; about 4-7 hr; about 5-8 hr; about 6-9 hr; about 7-10 hr; after administration or any T_(max) in a range bounded by, or between, any of these values.

In some embodiments, an oral dosage form may have a T_(max) of meloxicam that is shorter than would be achieved by administering meloxicam by intramuscular injection. In some embodiments, an oral dosage form may have a T_(max) of meloxicam that is shorter, or may increase meloxicam plasma levels at a faster rate, by a factor of at least about 1.5, about 2, about 3, about 4, about 5, about 6, about 7, about 8, about 9, about 10, about 12, about 15, about 20, or by a factor of about 1.5-1000, about 2-100, about 3-100, about 4-100, about 5-100, about 6-100, about 7-100, about 8-100, about 9-100, about 10-100, about 12-100, about 15-100, about 20-100, or by a factor in a range bounded by any of these values.

In some embodiments, a dosage form comprising meloxicam may result in a plasma concentration of meloxicam at 12 hours that is about 0.01-0.5 μg/mL; about 0.5-0.7 μg/mL; about 0.6-0.8 μg/mL; about 0.7-0.9 μg/mL; about 0.8-1 μg/mL; about 0.9-1.1 μg/mL; about 1-1.2 μg/mL; about 1.1-1.3 μg/mL; about 1.2-1.4 μg/mL; about 1.3-1.5 μg/mL; about 1.4-1.6 μg/mL; about 1.5-1.7 μg/mL; about 1.6-1.8 μg/mL; about 1.7-1.9 μg/mL; about 1.8-2 μg/mL; about 1.9-2.1 μg/mL; about 2-2.2 μg/mL; about 2.1-2.3 μg/mL; about 2.2-2.4 μg/mL; about 2.3-2.5 μg/mL; about 2.4-2.6 μg/mL; about 2.5-2.7 μg/mL; about 2.6-2.8 μg/mL; about 2.7-2.9 μg/mL; about 2.8-3 μg/mL; about 2.9-3.1 μg/mL; about 3-3.2 μg/mL; about 3.1-3.3 μg/mL; about 3.2-3.4 μg/mL; about 3.3-3.5 μg/mL; about 3.4-3.6 μg/mL; about 3.5-3.7 μg/mL; about 3.6-3.8 μg/mL; about 3.7-3.9 μg/mL; about 3.8-4 μg/mL; or any plasma concentration in a range bounded by, or between, any of these values.

In some embodiments, meloxicam is administered at a dose that results in a meloxicam plasma level (such as a C_(avg), or average plasma level) of about 0.01-0.5 μg/mL; about 0.5-0.7 μg/mL; about 0.6-0.8 μg/mL; about 0.7-0.9 μg/mL; about 0.8-1 μg/mL; about 0.9-1.1 μg/mL; about 1-1.2 μg/mL; about 1.1-1.3 μg/mL; about 1.2-1.4 μg/mL; about 1.3-1.5 μg/mL; about 1.4-1.6 μg/mL; about 1.5-1.7 μg/mL; about 1.6-1.8 μg/mL; about 1.7-1.9 μg/mL; about 1.8-2 μg/mL; about 1.9-2.1 μg/mL; about 2-2.2 μg/mL; about 2.1-2.3 μg/mL; about 2.2-2.4 μg/mL; about 2.3-2.5 μg/mL; about 2.4-2.6 μg/mL; about 2.5-2.7 μg/mL; about 2.6-2.8 μg/mL; about 2.7-2.9 μg/mL; about 2.8-3 μg/mL; about 2.9-3.1 μg/mL; about 3-3.2 μg/mL; about 3.1-3.3 μg/mL; about 3.2-3.4 μg/mL; about 3.3-3.5 μg/mL; about 3.4-3.6 μg/mL; about 3.5-3.7 μg/mL; about 3.6-3.8 μg/mL; about 3.7-3.9 μg/mL; about 3.8-4 μg/mL; about 0.1-20 μg/mL; about 0.5-15 μg/mL; about 0.5-10 μg/mL; about 5-15 μg/mL; about 10-20 μg/mL; about 7.5-15 μg/mL; about 2-10 μg/mL; about 1-8 μg/mL; about 1-6 μg/mL; about 1-2 μg/mL; about 0.5-3.5 μg/mL; about 0.5-7 μg/mL; about 12-20 μg/mL; about 8-12 μg/mL; about 1-4 μg/mL; about 4-7 μg/mL; about 7-11 μg/mL; about 11-15 μg/mL; about 15-19 μg/mL; about 16-20 μg/mL; or any amount of meloxicam plasma level in a range bounded by, or between, any of these values.

Administration of a dosage form described herein may result in a decreased time to therapeutic plasma concentration of meloxicam. The therapeutic plasma concentration is the C_(avg) for a 15 mg dose of Mobic® meloxicam. In some embodiments, the time to therapeutic plasma concentration of meloxicam (T_(thera)) is about 10-30 minutes, about 10-15 minutes, about 15-20 minutes, about 20-25 minutes, about 25-30 minutes, about 10-20 minutes, about 20-30 minutes, about 16-18 minutes, or about 17 minutes.

A method described herein may reduce the T_(max) of rizatriptan. For example, the method may achieve a T_(max) of rizatriptan in the patient within about 50 minutes; within about 60 minutes; within about 70 minutes; within about 80 minutes; or within about 90 minutes; at about 40-60 minutes, at about 40-45 minutes, at about 45-50 minutes, at about 50-55 minutes, or about 55-60 minutes after administration, or any T_(max) in a range bounded by any of these values.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from allodynia than the human being would have experienced two hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from allodynia than the human being would have experienced twenty-four hours after receiving the same amount of meloxicam without the rizatriptan.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and two hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from allodynia than the human being would have experienced two hours after receiving the same amount of rizatriptan without the meloxicam.

In some embodiments, the meloxicam and the rizatriptan are administered simultaneously (e.g. in a single dosage form, such as a single oral dosage form), and twenty-four hours after the meloxicam and the rizatriptan are administered, the human being experiences greater relief from allodynia than the human being would have experienced twenty-four hours after receiving the same amount of rizatriptan without the meloxicam.

One embodiment is a method for reducing the risk of gastrointestinal side effects in people taking NSAIDs for pain relief and for other conditions, particularly during chronic treatment, and improving the bioavailability of the NSAID. In one embodiment, the method involves the administration of a product that combines: a) an agent that actively raises intragastric pH; and b) an NSAID that is formulated with a cyclodextrin. In another embodiment, the method involves the administration of a product that combines: a) an agent that actively raises intragastric pH; b) an NSAID that is formulated with a cyclodextrin; and c) a buffering agent. Either short or long acting acid inhibitors can be effectively used in the dosage forms. This method has the added benefit of being able to protect patients from other gastrointestinal ulcerogens whose effect may otherwise be enhanced by the disruption of gastroprotective prostaglandins due to NSAID therapy.

The meloxicam formulation in an aqueous parenteral form may include a buffer to adjust the pH of an aqueous formulation, within a range of about 2 to about 5; about 3.5 to about 5; about 5 to about 11; about 6 to about 9; about 6 to about 8; about 6 to about 7; or any other pH in a range bounded by, or between, any of these values. The meloxicam formulation in an oral form may include a buffer to adjust the pH of stomach fluid within a range of about 2 to about 5; about 3.5 to about 5; about 5 to about 11; about 6 to about 9; about 6 to about 8; about 6 to about 7; or any other pH in a range bounded by, or between, any of these values. Examples of buffers suitable for use herein include sulfate buffers, phosphate buffers, borate buffers, carbonate buffers, citrate buffers, etc.

In some embodiments, the dosage form may be formulated for oral administration, for example, with an inert diluent or with an edible carrier, or it may be enclosed in hard or soft shell gelatin capsules, compressed into tablets, or incorporated directly with the food of the diet. For oral therapeutic administration, the active compound may be incorporated with an excipient and used in the form of ingestible tablets, buccal tablets, coated tablets, troches, capsules, elixirs, dispersions, suspensions, solutions, syrups, wafers, patches, and the like.

Tablets, troches, pills, capsules and the like may also contain one or more of the following: a binder such as gum tragacanth, acacia, corn starch or gelatin; an excipient, such as dicalcium phosphate; a disintegrating agent such as corn starch, potato starch, alginic acid and the like; a lubricant such as magnesium stearate; a sweetening agent such as sucrose, lactose or saccharin; or a flavoring agent such as peppermint, oil of wintergreen or cherry flavoring. When the unit dosage form is a capsule, it may contain, in addition to materials of the above type, a liquid carrier. Various other materials may be present as coating, for instance, tablets, pills, or capsules may be coated with shellac, sugar or both. A syrup or elixir may contain the active compound, sucrose as a sweetening agent, methyl and propylparabens as preservatives, a dye and flavoring, such as cherry or orange flavor. It may be desirable for material in a dosage form or pharmaceutical composition to be pharmaceutically pure and substantially non-toxic in the amounts employed.

Some compositions or dosage forms may be a liquid, or may comprise a solid phase dispersed in a liquid.

The dosage form may further comprise a second therapeutically active agent, such as an acid inhibitor or an analgesic.

In some embodiments, the dosage form may further comprise an acid inhibitor present in an amount effective to raise the gastric pH of a patient to at least 2, to at least 2.5, to at least 3, to at least 3.5, to at least 4, and more to at least 5, when one or more unit dosage forms are administered. The term “acid inhibitor” refers to agents that inhibit gastric acid secretion and increase gastric pH. Specific H2 blockers, also referred to as H2 antagonists or histamine H2 blockers or antagonists, that may be used include but are not limited to cimetidine, ranitidine, ebrotidine, pabutidine, lafutidine, loxtidine, famotidine, or combinations thereof.

Other agents that may be effectively used as acid inhibitors are the proton pump inhibitors such as omeprazole, esomeprazole, pantoprazole, lansoprazole, dexlansoprazole, rabeprazole, pariprazole, leminoprazole and tenatoprazole. In some embodiments the daily dose of the acid inhibitor is about 1-200 mg, about 1-100 mg, about 1-50 mg, about 40-80 mg, about 5-50 mg, about 20-40 mg, about 10-50 mg, about 10-20 mg, about 20-40 mg, about 15-50 mg, about 30-60 mg, about 10 mg, about 20 mg, about 30 mg, about 40 mg or any other amount in a range bounded by, or between, any of these values.

Examples of particular proton pump inhibitors include esomeprazole, present in unit dosage forms in an amount of between 5 mg and 50 mg; omeprazole, present in unit dosage forms in an amount of between 5 mg and 50 mg; lansoprazole, present in unit dosage forms in an amount of between 5 mg and 150 mg (and preferably at between 5 mg and 30 mg); and pantoprazole, present in unit dosage forms in an amount of between 10 mg and 200 mg. In some embodiments, the proton pump inhibitor is present in the dosage form in an amount of about 10-30 mg, about 20-40 mg, about 30-50 mg, about 40-60 mg, about 50-70 mg, about 60-80 mg, about 70-90 mg, or about 80-100 mg. Recently, a newer class of acid inhibitor has been developed which competes with potassium at the acid pump. The compounds in this class have been referred to as “reversible proton pump inhibitors” or “acid pump antagonists” and may also be used. Examples include AZD-0865, AR-H047108, CS-526, pumaprazole, revaprazan and soraprazan (see WO9605177 and WO9605199). Other compounds in this group are H-335/25 (AstraZeneca, Dialog file 128, accession number 020806); Sch-28080 (Schering Plough, Dialog file 128, accession number 009663); Sch-32651 (Schering Plough, Dialog file 128, accession number 006883) and SK&F-96067 (CAS Registry no. 115607-61-9).

The second therapeutically active agent may include an analgesic such as a second non-steroidal anti-inflammatory drug, an opioid, a steroid, a triptan, etc. In some embodiments, the dosage form or treatment also further comprises administering a second non-steroidal anti-inflammatory drug in an amount effective to reduce or eliminate pain or inflammation. The NSAID may include, but is not limited to, celecoxib, rofecoxib, lumiracoxib, valdecoxib, parecoxib, etoricoxib, CS-502, JTE-522, L-745,337, NS398, aspirin, acetaminophen (considered to be an NSAID for the purposes of the present disclosure), ibuprofen, flurbiprofen, ketoprofen, naproxen, oxaprozin, etodolac, indomethacin, ketorolac, lornoxicam, meloxicam, piroxicam, droxicam, tenoxicam, nabumetone, diclofenac, meclofenamate, mefenamic acid, diflunisal, sulindac, tolmetin, fenoprofen, suprofen, benoxaprofen, aceclofenac, tolfenamic acid, oxyphenbutazone, azapropazone, phenylbutazone, or combinations thereof. It will be understood that, for the purposes of the present disclosure, reference to an acid inhibitor, NSAID, or analgesic agent will include all of the common forms of these compounds and, in particular, their pharmaceutically acceptable salts. The amounts of NSAIDs which are therapeutically effective may be lower in the current embodiments than otherwise found in practice due to potential positive kinetic interaction and NSAID absorption in the presence of an acid inhibitor, and or in the presence of a buffering agent.

In other embodiments, the dosage form or treatment may further comprise administering an opioid in an amount effective to reduce or eliminate pain or inflammation. The opioid may include, but is not limited to, (dextro)propoxyphene, A-methylfentanyl, alfentanil, allylprodine, bezitramide, buprenorphine, butorphanol, carfentanyl, desmethylprodine, dextromoramide, dezocine, diacetylmorphine, dihydrocodeinone, dihydroetorphine, dimorphone, diphenoxylate, dipipanone, etorphine, fentanyl, ketobemidone, lefetamine, levacetylmethadol, levomethorphan, levorphanol, loperamide, meperidine, meptazinol, methadone, methylmorphine, morphine, nalbuphine, nalmefene, naloxone, naltrexone, nicomorphine, ohmefentanyl, oripavine, oxycodone, oxymorphone, PEPAP, paramorphine, pentazocine, phenazocine, piritramide, prodine, remifentanil, sufentanil, tapentadol, tilidine, tramadol, or combinations thereof.

Useful triptans may include sumatriptan, rizatriptan, naratriptan, eletriptan, donitriptan, almotriptan, frovatriptan, alvitriptan, zolmatriptan, etc. In some embodiments, the triptan comprises rizatriptan. In some embodiments, the dosage form may contain about 1-5 mg, about 2-6 mg, about 3-7 mg, about 4-8 mg, about 5-10 mg, about 6-11 mg, about 7-12 mg, about 8-13 mg, about 9-14 mg, about 10-15 mg, about 15-20 mg, or about 20-30 mg, of the triptan, such as rizatriptan, or any amount in a range bounded by any of these values.

In some embodiments; a dosage form comprising the subject combination may contain rizatriptan in an amount of about 1-50 mg; about 1-10 mg; about 10-20 mg; about 20-30 mg; about 30-40 mg; or about 40-50 mg; about 10-40 mg; about 1-35 mg; about 1-25 mg; about 1-15 mg; about 1-10 mg; about 5-20 mg; about 1-5 mg; about 2-6 mg; about 3-7 mg; about 4-8 mg; about 5-10 mg; about 6-11 mg; about 7-12 mg; about 8-13 mg; about 9-11 mg; about 9-14 mg; about 10-15 mg; about 11-16 mg; about 12-17 mg; about 13-18 mg; about 14-19 mg; about 15-20 mg; about 5-15 mg; about 0.5 mg; about 1 mg; about 1.5 mg; about 2 mg; about 2.5 mg; about 3 mg; about 3.5 mg; about 4 mg; about 4.5 mg; about 5 mg; about 6 mg; about 7 mg; about 7.5 mg; about 8 mg, about 9 mg, about 10 mg; about 15 mg; about 20 mg, about 25 mg, about 30 mg; or any amount in a range bounded by, or between, any of these values.

For acute migraines, the amount of meloxicam and/or rizatriptan in a single dose, or the AUC of the meloxicam and/or rizatriptan associated with a single dose, is of particular interest. For example, after a single dose, the symptoms may be relieved for an extended period of time, such that, in the short term, repeated doses may not be needed. For more continuous conditions, including more chronic, continuous, or frequent migraine symptoms, daily, weekly, or monthly doses may be of particular interest.

For any amounts of rizatriptan described herein, salt forms of rizatriptan may be present in the amounts recited above, or amounts that are molar equivalents to these amounts for the rizatriptan free base. For example, assuming that the molecular weight of rizatriptan free base is 269.3 g/mol, 10 mg of rizatriptan is 37.1 mmol of rizatriptan. Thus, a molar equivalent of 10 mg of rizatriptan free base would be the mass of 37.1 mmol of that salt form. For example, for the benzoate salt (mw=391.2 g/mol), the molar equivalent of 10 mg of the free base (or 37.1 mmol), would be 14.5 mg. These doses may be safe for repeated administration, such as 1, 2, 3, or 4 times a day, or repeated at an interval of 2 days, 3 days, 4 days, 5 days, 6 days, 7 days, 8 days, 9 days, 10 days, 11 days, 12 days, 13 days, 14 days, 15 days, 16 days, 17 days, 18 days, 19 days, 20 days, 21 days, 22 days, 23 days, 24 days, 25 days, 26 days, 27 days, 28 days, 29 days, 30 days, 31 days, 4 weeks, 4-6 weeks, about 1-2 months, about 6 weeks, about 2-3 months, about 3-4 months, about 4-5 months, about 5-6 months, about 6-7 months, about 7-8 months, about 8-9 months, about 9-10 months, about 10-11 months, about 11-12 months, etc.

A pharmaceutical composition may be in the form of a tablet or capsule that has: (a) the acid inhibitor; and/or (b) a buffering agent; and (c) the non-steroidal anti-inflammatory drug (NSAID) present in an amount effective to reduce or eliminate pain or inflammation in a patient upon administration of one or more of said unit dosage forms. The components of the pharmaceutical composition may be in an immediate or extended release form individually or in total.

The term “unit dosage form” as used herein refers to a single entity for drug administration. For example, a single tablet or capsule combining both an acid inhibitor and an NSAID would be a unit dosage form. A “unit dosage form” (or “unit dose form”) may also be referred to as a “fixed dosage form” (or “fixed dose form”) or “fixed dosage combination” (or “fixed dose combination”) and are otherwise interchangeable. In one embodiment, the unit dosage form is a multilayer tablet.

In another embodiment, the unit dosage form is suitable for oral administration to a patient. In yet another embodiment, the unit dosage form is a tablet. In still another embodiment, the unit dosage form is a multilayer tablet comprising a single core and one or more layers outside of the core.

Some dosage forms may comprise a first layer comprising meloxicam, an SBEβCD, and a bicarbonate; and a second layer comprising a second therapeutically active agent and a bicarbonate.

The first layer may contain, for example, any amount of meloxicam in one of the ranges recited above. For example, all of the meloxicam in the dosage form may be present in the first layer. The second layer may contain all of the second therapeutically active agent, such that any amount in the ranges recited above with respect to the second therapeutically active agent may apply to the second layer.

In some embodiments, the first layer contains about 10-200 mg, about 50-150 mg, about 50-100 mg, about 70-120 mg, about 90-140 mg, or about 100 mg of the bicarbonate, such as sodium bicarbonate, or any amount of the bicarbonate in a range bounded by any of these values.

In some embodiments, the second layer contains about 100-500 mg, about 200-500 mg, about 300-500 mg, about 350-450 mg, about 380-420 mg, or about 400 mg of the bicarbonate, such as sodium bicarbonate, or any amount of the bicarbonate in a range bounded by any of these values.

In some embodiments, the pharmaceutical composition may have an effective amount of meloxicam, a cyclodextrin, and a carbonate or bicarbonate to increase bioavailability of meloxicam. In other embodiments, the pharmaceutical composition may have an effective amount of meloxicam, sulfobutylether-β-cyclodextrin (SBEβCD), and sodium bicarbonate to increase bioavailability of meloxicam or reduce the T_(max) of meloxicam.

Some oral dosage forms may have enteric coatings or film coatings. In some embodiments, a dosage form may comprise a tablet or a capsule having an enteric coating. In some embodiments, a dosage form may comprise a tablet or a capsule having a film coating.

An embodiment of the present disclosure is directed to a pharmaceutical composition in unit dosage form suitable for administration to a patient, comprising:

(a) esomeprazole, which may or may not be surrounded by an enteric coating;

(b) sodium or potassium bicarbonate and/or sodium or potassium carbonate; and

(c) meloxicam, which may or may not be formulated with a cyclodextrin, and which may or may not be surrounded by an enteric coating

In certain embodiments, the pharmaceutical composition results in faster release or dissolution of the meloxicam from the dosage form as compared to a dosage form containing meloxicam but not containing the acid inhibitor, or not containing the buffering agent.

The following embodiments are contemplated:

Embodiment 1

An inclusion complex of meloxicam in a cyclodextrin.

Embodiment 2

A dosage form comprising: 1) the inclusion complex of embodiment 1, or 2) meloxicam and a carbonate or a bicarbonate.

Embodiment 3

The dosage form of embodiment 2 comprising the inclusion complex, wherein the cyclodextrin comprises substituted β-cyclodextrin.

Embodiment 4

The dosage form of embodiment 3, wherein the substituted β-cyclodextrin is a sulfobutyl ether β-cyclodextrin (SBEβCD) or hydroxypropyl β-cyclodextrin (HPBCD).

Embodiment 5

The dosage form of embodiment 4, wherein the cyclodextrin is the SBEβCD.

Embodiment 6

The dosage form of embodiment 5, wherein the SBEβCD has about 6 to about 7 sulfobutyl ether groups for each molecule of β-cyclodextrin.

Embodiment 7

The dosage form of embodiment 6, wherein the meloxicam and the SBEβCD have a molar ratio of about 0.8 to about 1.2.

Embodiment 8

The dosage form of embodiment 6, wherein the meloxicam and the SBEβCD have a molar ratio of about 1.

Embodiment 9

The dosage form of embodiment 2, 3, 4, 5, 6, 7, or 8, comprising a bicarbonate.

Embodiment 10

The dosage form of embodiment 9, wherein the bicarbonate comprises sodium bicarbonate.

Embodiment 11

The dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, or 10, which is an oral dosage form.

Embodiment 12

The dosage form of embodiment 2, 3, 4, 5, 6, 9, 10, or 11, wherein about 50 mg to about 200 mg of SBEβCD is present in the dosage form.

Embodiment 13

The dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12, wherein the carbonate or bicarbonate is present in an amount in a range of about 400 mg to about 600 mg.

Embodiment 14

The dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or 13, wherein the T_(max) of meloxicam is decreased as compared to a dosage form not having a carbonate, a bicarbonate, or a cyclodextrin.

Embodiment 15

The method of embodiment 14, wherein the T_(max) of meloxicam is achieved in the patient at a time in a range of about 10 minutes to about 180 minutes after administration.

Embodiment 16

The dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15, having an oral bioavailability of meloxicam that is higher than a dosage form not having a carbonate, a bicarbonate, or a cyclodextrin.

Embodiment 17

The dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20, further comprising an acid inhibitor.

Embodiment 18

The dosage form of embodiment 17, wherein the acid inhibitor is a proton pump inhibitor.

Embodiment 19

The dosage form of embodiment 18, wherein the proton pump inhibitor is esomeprazole.

Embodiment 20

The dosage form of embodiment 19, wherein about 30 mg to about 50 mg of esomeprazole is present in the dosage form.

Embodiment 21

A method of administering meloxicam orally, comprising orally administering a dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 to a patient in need of treatment.

Embodiment 22

The method of embodiment 21, wherein the dosage form is administered to treat pain.

Embodiment 23

The method of embodiment 21, wherein the dosage form is administered to treat inflammatory pain.

Embodiment 24

The method of embodiment 21, wherein the dosage form is administered to treat osteoarthritis, rheumatoid arthritis, or juvenile rheumatoid arthritis.

Embodiment 25

A method of administering meloxicam intravenously, comprising intravenously administering a dosage form of embodiment 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, or 15, to a patient in need of treatment.

Example 1

The effect of varying amounts of potassium carbonate (K₂CO₃) and sodium bicarbonate (NaHCO₃) on the pH of acidic media was tested. The acidic media was chosen to simulate gastric conditions. K₂CO₃ or NaHCO₃ was added to 50 mL of a 0.01 N HCl solution (pH 2). The pH of the solution was measured after addition of the K₂CO₃ or NaHCO₃. Deionized water (240 mL) was then added to the mixture and pH was measured again. The results are shown in Tables 1-4.

TABLE 1 Results with K₂CO₃ (0.01N HCl) K₂CO₃ (mg) pH 25 2.84 35 6.29 45 8.05 50 8.29 100 9.43 200 10.14 300 10.39 400 10.55 450 10.58

TABLE 2 Results with K₂CO₃ (0.01N HCl + Water) K₂CO₃ (mg) pH 200 10.27 300 10.46 400 10.57 450 10.63

TABLE 3 Results with NaHCO₃ (0.01N HCl) NaHCO₃ (mg) pH 200 5.28 300 5.90 400 6.44 450 6.86 500 8.23 750 8.30 1000 8.36

TABLE 4 Results with NaHCO₃ (0.01N HCl + Water) NaHCO₃ (mg) pH 200 5.41 300 5.89 400 6.11 450 6.46 500 8.33 750 8.54 1000 8.60

Example 2

Tablets containing meloxicam and combinations of a sulfobutylether-β-cyclodextrin (SBEβCD) (a cyclodextrin, containing about 6 to about 7 sulfobutyl ether groups for each molecule of β-cyclodextrin), K₂CO₃, or NaHCO₃ were manufactured and tested for dissolution. Tablets containing meloxicam alone (MOBIC®) were purchased and also tested for dissolution. The tested tablets are listed in Table 5. Meloxicam in the form of meloxicam/SBEβCD inclusion complexes was used in the tablets containing meloxicam and SBEβCD. The inclusion complexes were formed by mixing meloxicam and SBEβCD in an aqueous pH-adjusted solution. The pH of the solution was adjusted using buffering agents. The resulting soluble meloxicam/SBEβCD inclusion complexes were then spray dried. This spray-dried dispersion was used in the manufacture of the tablets containing SBEβCD.

TABLE 5 Tablets Tablet A 15 mg meloxicam + 25 mg K₂CO3 Tablet B 15 mg meloxicam + 50 mg K₂CO3 Tablet C 15 mg meloxicam + 100 mg K₂CO3 Tablet D 15 mg meloxicam + 150 mg K₂CO3 Tablet E 15 mg meloxicam + 500 mg NaHCO3 Tablet F 15 mg meloxicam + 100 mg SBEβCD Tablet G 15 mg meloxicam + 100 mg SBEβCD + 25 mg K₂CO3 Tablet H 15 mg meloxicam + 100 mg SBEβCD + 50 mg K₂CO3 Tablet I 15 mg meloxicam + 100 mg SBEβCD + 100 mg K₂CO3 Tablet J 15 mg meloxicam + 100 mg SBEβCD + 150 mg K₂CO3 Tablet K 15 mg meloxicam + 100 mg SBEβCD + 500 mg NaHCO3 Tablet L 15 mg meloxicam (MOBIC ®)

Dissolution testing in acidic medium (chosen to simulate gastric conditions) was performed by placing the tablets in a 0.01 N HCl solution, at an agitation rate of 75 RPM, and vessel temperature of approximately 37° C. The results are presented in Tables 6 and in FIGS. 1-10. Results at various time points (0, 15, 30, 45, 60, 90, and 120 minutes) are presented as percent (%) of meloxicam dissolved.

TABLE 6 Dissolution Results 90 120 0 mins 15 mins 30 mins 45 mins 60 mins mins mins Tablet A 0% 23% 17% 15% 13% 12% 11% Tablet B 0% 27% 20% 17% 16% 17% 15% Tablet C 0% 31% 26% 25% 24% 23% 21% Tablet D 0% 30% 26% 25% 24% 23% 22% Tablet E 0% 50% 66% 77% 84% 92% 95% Tablet F 0% 26% 17% 14% 12% 11% 10% Tablet G 0% 48% 39% 26% 20% 16% 14% Tablet H 0% 44% 30% 22% 17% 16% 13% Tablet I 0% 32% 33% 27% 21% 16% 15% Tablet J 0% 26% 27% 19% 15% 12% 11% Tablet K 0% 85% 86% 86% 86% 86% 86% Tablet L 0% 2% 2% 2% 2% 2% 2%

Dissolution of meloxicam was greater with the tablets containing various combinations of meloxicam and SBEβCD, K₂CO₃, or NaHCO₃, as compared to tablets containing meloxicam alone. For example, after 120 minutes, dissolution of meloxicam tablets containing NaHCO₃ was 95% as compared to 2% for tablets containing meloxicam alone.

Dissolution of meloxicam increasing with increasing amounts of K₂CO₃ in the absence of SBEβCD. However, in the presence of SBEβCD, increasing amounts of K₂CO₃ did not appear to increase meloxicam dissolution. At the highest dose of potassium bicarbonate tested, meloxicam dissolution in the presence of SBEβCD was reduced by approximately 50% as compared to meloxicam dissolution in the absence of SBEβCD at 120 minutes.

Dissolution of meloxicam with NaHCO₃ was significantly greater than that observed with the highest dose of K₂CO₃ at 15 minutes (50% versus 30%), and at 120 minutes (92% versus 23%). Meloxicam dissolution in the presence of SBEβCD was also significantly greater with NaHCO₃ as compared to the highest dose of K₂CO₃ at 15 minutes (85% versus 26%), and at 120 minutes (86% versus 12%). NaHCO₃ in the presence of SBEβCD increased meloxicam dissolution more at 15 minutes as compared to potassium carbonate, which resulted in a reduction in dissolution.

Example 3

A bilayer tablet containing 1) an inclusion complex of SBEβCD with meloxicam, prepared as described below, and 2) sodium bicarbonate was prepared (SBEβCD-Meloxicam/Bicarbonate). The first layer contained an inclusion complex of 15 mg meloxicam and 100 mg SBEβCD, and 100 mg of sodium bicarbonate. The second layer contained 40 mg of esomeprazole and 400 mg of sodium bicarbonate.

A total of 20 human subjects were randomly assigned in a 1:1 ratio to treatment with the SBEβCD-Meloxicam/Bicarbonate tablets described above or Mobic® tablets (15 mg meloxicam), once daily for 6 days under fasting conditions.

On the first day of dosing, plasma samples were collected for concentration analysis of meloxicam at several time points. Concentrations of meloxicam were determined using LC-MS/MS. Pharmacokinetic parameters were calculated. The results are depicted in

FIG. 11.

The median T_(max) for meloxicam, the trial's primary endpoint, was 9 times faster for the SBEβCD-Meloxicam/Bicarbonate tablets as compared to Mobic® (0.5 hour versus 4.5 hours respectively, p<0.0001).

The SBEβCD-Meloxicam/Bicarbonate tablets also demonstrated higher mean maximum plasma concentration (C_(max)) (p=0.0018), faster time to therapeutic plasma concentration (p<0.0001), and faster time to half-maximal plasma concentration (p<0.0001) as compared to Mobic®.

Meloxicam in the form of meloxicam/SBEβCD inclusion complexes was used in the tablets containing meloxicam and SBEβCD. The inclusion complexes were formed by mixing meloxicam and SBEβCD in an aqueous pH-adjusted solution. The pH of the solution was adjusted using buffering agents. The resulting soluble meloxicam/SBEβCD inclusion complexes were then spray dried. This spray-dried dispersion was used in the manufacture of the tablets containing SBEβCD.

Example 4

A monolayer tablet containing 1) the inclusion complex of SBEβCD with meloxicam; 2) rizatriptan; and 3) sodium bicarbonate was prepared (SBEβCD-Meloxicam/rizatriptan/Bicarbonate). The monolayer tablet contained 20 mg of meloxicam, 10 mg of rizatriptan, and 500 mg of sodium bicarbonate. The inclusion complex was the same as the inclusion complex of Example 3.

Dissolution testing of the tablets in acidic medium (chosen to simulate gastric conditions) was performed by placing the tablets in a 0.01 N HCl solution, at an agitation rate of 75 RPM, and vessel temperature of approximately 37° C. The results are presented in Table 7. Results at various time points (0, 15, 30, 45, 60, 90, and 120 minutes) are presented as percent (%) of meloxicam, and percent (%) of rizatriptan dissolved.

TABLE 7 Dissolution Results Time-point (minutes) 15 30 0 min min min 45 min 60 min 90 min 120 min Rizatriptan 0% 89% 102% 103% 103% 103% 103% Meloxicam 0% 79%  92% 93% 93% 93% 94%

As shown in Table 7, the dissolution results of the tablets in Example 4 are very similar to the dissolution result of Example 3. Therefore, we expected the pharmacokinetic properties, including bioavailability, T_(max) of meloxicam, etc., of the tablets in Example 4 to be similar to those described in Example 3 and FIG. 11. This expectation turned out to be correct, as shown in the examples below.

Example 5

The monolayer tablet of Example 4 was administered to six human subjects. On the first day of dosing, plasma samples were collected for concentration analysis of rizatriptan at several time points. Concentrations of rizatriptan and meloxicam were determined using LC-MS/MS. Pharmacokinetic parameters were calculated. The results for meloxicam were comparable to those reported for the bilayer dosage form of Example 3. The median T_(max) of rizatriptan was 0.75 hours and the mean C_(max) of rizatriptan was 20.710 ng/mL. By comparison, the reported T_(max) of the commercial rizatriptan dosage form, Maxalt®, is 1.0-1.5 hours.

Example 6

A Phase 1, randomized, single-dose, parallel-group clinical study was conducted to evaluate the PK, safety and tolerability of 1) a combination of meloxicam (20 mg), rizatriptan (10 mg), SBEβCD, and sodium bicarbonate (meloxicam/rizatriptan), as compared to 2) and Maxalt® (10 mg rizatriptan), in healthy human volunteers after oral administration under fasted conditions. A total of 20 healthy, adult male or female volunteers were randomized in a 1:1 ratio to receive a single dose of meloxicam/rizatriptan, or Maxalt® (10 mg rizatriptan).

Blood samples for PK analysis were collected pre dose and at multiple time points post dose. The pre-specified primary endpoint was T_(thera), the time to reach a therapeutic plasma concentration of meloxicam, defined as the C_(avg) of meloxicam after administration of the highest approved dose (15 mg) of standard meloxicam, which is approximately 1000 ng/mL. PK results for the rizatriptan component of meloxicam/rizatriptan were compared to those for Maxalt® (rizatriptan).

PK results for the meloxicam (20 mg) component of meloxicam/rizatriptan from this trial were compared to PK results for Mobic® (15 mg meloxicam) from Example 3.

Phase 1 Results

Meloxicam was rapidly absorbed after oral administration of meloxicam/rizatriptan (20 mg meloxicam/10 mg rizatriptan), with a median time to therapeutic plasma concentration (T_(thera)) of 17 minutes, the primary endpoint (FIG. 12 and Table 8). Median T_(max) was 1 hour compared to 4.5 hours for 15 mg standard meloxicam) (Mobic®). The very short T_(max) suggests the potential for meloxicam/rizatriptan to have rapid onset of action in treating migraine. Mean plasma elimination half-life (T_(1/2)) for meloxicam was 18.2 hours after administration of meloxicam/rizatriptan, which compares to 21.5 hours for standard meloxicam. The long elimination half-life suggests the potential for meloxicam/rizatriptan to enhanced and sustained efficacy, and to reduce migraine pain recurrence.

TABLE 8 Meloxicam Pharmacokinetic Parameters for Meloxicam/Rizatriptan AUC_(0-inf) C_(max) Statistic (ng · hr/mL) T_(1/2) el (hr) (ng/mL) T_(max) (hr)^(a) T_(thera) (hr)^(a) N 10 10 10 10 10 Geometric 46,865 17.5 2,532 1.0 0.29 Mean SD 11,965 5.25 607 0.5-2.5 0.20-0.61 ^(a)T_(max) and T_(thera) present the value as a median or a range.

Rizatriptan was rapidly absorbed after oral administration of meloxicam/rizatriptan, with a T_(max) of 0.64 hour (38 min), which compares to 0.88 hour for the same dose of standard rizatriptan (Maxalt®) (FIG. 13 and Table 9). Systemic exposure measured using C_(max) and AUC were also numerically greater for rizatriptan after administration of meloxicam/rizatriptan versus standard rizatriptan.

TABLE 9 Rizatriptan Pharmacokinetic Parameters for Meloxicam/Rizatriptan and Standard Rizatriptan AUC_(0-inf) T_(1/2) el (hr) C_(max) Statistic (pg · hr/mL) (hr) (ng/mL) T_(max) (hr)^(a) Meloxicam/Rizatriptan N 10 10 10 10 (20 mg meloxicam/10 mg Geometric 83,800 1.98 29,991 0.64 rizatriptan) Mean SD 22,787 0.28 11,041 0.5-2.5 Standard Rizatriptan N 10 10 10 10 (Maxalt ®) (10 mg Geometric 71,811 1.81 23,236 0.88 rizatriptan) Mean SD 24,287 0.11 9,476 0.5-2   ^(a)T_(max) presents the value as a median or a range.

Meloxicam/rizatriptan was well tolerated with no relevant differences in safety profile between the two treatment arms. There were no serious adverse events in the study.

Example 7

A Phase 3, randomized, double-blind, multicenter, active- and placebo-controlled trial is carried out to assess the efficacy and safety of meloxicam/rizatriptan in the acute treatment of moderate and severe migraine, in patients with a history of inadequate response to prior acute migraine treatments. Eligible patients are randomized in a 2:2:2:1 ratio to treatment with meloxicam/rizatriptan (20 mg meloxicam/10 mg rizatriptan, with SBEβCD and sodium bicarbonate as described in Example 4 above), rizatriptan (10 mg) (rizatriptan arm), meloxicam (20 mg) with SBEβCD and sodium bicarbonate (meloxicam arm), or placebo. Co-primary endpoints are freedom from headache pain, and freedom from the most bothersome migraine-associated symptom (nausea, photophobia, or phonophobia), two hours after dosing, for meloxicam/rizatriptan as compared to placebo.

Superiority of meloxicam/rizatriptan to the rizatriptan and the meloxicam arms (component contribution) will be established based on sustained freedom from headache pain from two to 24 hours after dosing (key secondary endpoint).

Eligible patients must have a history of inadequate response to prior acute migraine treatments, assessed using the Migraine Treatment Optimization Questionnaire (mTOQ-4). The mTOQ-4 is a validated questionnaire that assesses efficacy response to prior acute treatments based on four aspects (two-hour pain freedom, efficacy for at least 24 hours with one dose, ability to plan daily activities, and disruption of daily activities).

It is expected that meloxicam/rizatriptan will show significant improvement over placebo and superiority over the rizatriptan and the meloxicam arms because of the rapid absorption and distinct dual mechanisms of action of meloxicam/rizatriptan described herein.

Example 8

A female migraine sufferer visits her physician in the hope of having relief from her migraine pain. Her doctor gives her 10 mg rizatriptan (Maxalt®), which she takes during her next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On her next visit, her doctor gives her 20 mg of meloxicam in a tablet also containing SBEβCD and 500 mg of sodium bicarbonate, which she takes during her next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On her next visit, her doctor gives her a tablet described in Example 4 above. She reports that at 2 hours and 24 hours after taking the tablet, she has about 10-30% improvement in pain, nausea, allodynia, photophobia, and/or phonophobia over what she experienced after taking meloxicam or rizatriptan alone.

Example 9

A male migraine sufferer visits his physician in the hope of having relief from his migraine pain. His doctor gives him 10 mg rizatriptan (Maxalt®), which he takes during his next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On his next visit, his doctor gives his 20 mg of meloxicam in a tablet also containing SBEβCD and 500 mg of sodium bicarbonate, which he takes during his next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On his next visit, his doctor gives him a tablet described in Example 4 above. He reports that at 2 hours and 24 hours after taking the tablet, he has about 30-60% improvement in pain, nausea, allodynia, photophobia, and/or phonophobia over what he experienced after taking meloxicam or rizatriptan alone.

Example 10

A female migraine sufferer visits her physician in the hope of having relief from her migraine pain. Her doctor gives her 10 mg rizatriptan (Maxalt®), which she takes during her next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On her next visit, her doctor gives her 20 mg of meloxicam in a tablet also containing SBEβCD and 500 mg of sodium bicarbonate, which she takes during her next acute migraine. It provides some relief of pain, nausea, allodynia, photophobia, and phonophobia, but not complete relief from these symptoms. On her next visit, her doctor gives her a tablet described in Example 4 above. She reports that at 2 hours and 24 hours after taking the tablet, she has about 60-100% improvement in pain, nausea, allodynia, photophobia, and/or phonophobia over what she experienced after taking meloxicam or rizatriptan alone.

Unless otherwise indicated, all numbers expressing quantities of ingredients, properties such as amounts, percentage, and so forth used in the specification and claims are to be understood in all instances as indicating both the exact values as shown and as being modified by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.

The terms “a,” “an,” “the” and similar referents used in the context of describing the embodiments (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein is intended merely to better illuminate the embodiments and does not pose a limitation on the scope of any claim. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the claims.

Groupings of alternative elements or embodiments disclosed herein are not to be construed as limitations. Each group member may be referred to and claimed individually or in any combination with other members of the group or other elements found herein. It is anticipated that one or more members of a group may be included in, or deleted from, a group for reasons of convenience and/or to expedite prosecution. When any such inclusion or deletion occurs, the specification is deemed to contain the group as modified thus fulfilling the written description of all Markush groups if used in the appended claims.

Certain embodiments are described herein, including the best mode known to the inventors for carrying out the claimed embodiments. Of course, variations on these described embodiments will become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventor expects skilled artisans to employ such variations as appropriate, and the inventors intend for the claimed embodiments to be practiced otherwise than specifically described herein. Accordingly, the claims include all modifications and equivalents of the subject matter recited in the claims as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is contemplated unless otherwise indicated herein or otherwise clearly contradicted by context.

In closing, it is to be understood that the embodiments disclosed herein are illustrative of the principles of the claims. Other modifications that may be employed are within the scope of the claims. Thus, by way of example, but not of limitation, alternative embodiments may be utilized in accordance with the teachings herein. Accordingly, the claims are not limited to embodiments precisely as shown and described. 

1. A method of treating migraine comprising: selecting a human migraine patient with a history of inadequate response to prior migraine treatments, and orally administering a dosage form to the migraine patient, wherein the dosage form comprises a combination of: 1) a complex of meloxicam with a sulfobutyl ether β-cyclodextrin (SBEβCD), 2) a bicarbonate, and 3) a rizatriptan, wherein the human migraine patient is free of migraine pain 24 hours after the dosage form is orally administered to the human migraine patient.
 2. The method of claim 1, wherein the oral dosage form contains 400 mg to 600 mg of the bicarbonate.
 3. The method of claim 1, wherein the oral dosage form contains about 5 mg to about 50 mg of meloxicam.
 4. The method of claim 1, wherein the oral dosage form contains about 50 mg to about 200 mg of the SBEβCD.
 5. The method of claim 1, wherein the oral dosage form is a solid oral dosage form having a shorter T_(max) of meloxicam in the human being than a reference dosage form that: 1) contains the same amount of meloxicam, 2) does not contain an SBEβCD, and 3) does not contain a bicarbonate.
 6. The method of claim 5, wherein the oral dosage form has been shown to have faster time to therapeutic plasma concentration in the human being as compared to the reference dosage form.
 7. The method of claim 1, wherein about 1 mg to about 50 mg of the rizatriptan is present in the oral dosage form based upon the weight of the rizatriptan in the free base form.
 8. The method of claim 1, wherein the rizatriptan is present in a salt form in an amount that is a molar equivalent of about 10 mg of the rizatriptan in the free base form.
 9. The method of claim 1, wherein the rizatriptan is present as rizatriptan benzoate.
 10. The method of claim 1, wherein the oral dosage form contains about 10 mg to about 30 mg of meloxicam.
 11. The method of claim 1, wherein the oral dosage form contains about 20 mg of meloxicam.
 12. The method of claim 1, wherein the oral dosage form contains about 15 mg of meloxicam.
 13. The method of claim 1, wherein the SBEβCD has about 6 to about 7 sulfobutyl ether groups for each molecule of β-cyclodextrin.
 14. The method of claim 1, wherein the oral dosage form contains about 50 mg to about 150 mg of the SBEβCD.
 15. The method of claim 1, wherein the oral dosage form contains about 100 mg of the SBEβCD.
 16. The method of claim 1, wherein the molar ratio of the SBEβCD to meloxicam is about 0.5 to about
 2. 17. The method of claim 1, wherein the molar ratio of the SBEβCD to meloxicam is about 0.8 to about 1.2.
 18. The method of claim 1, wherein the molar ratio of the SBEβCD to meloxicam is about
 1. 19. The method of claim 1, wherein the oral dosage form contains about 10 mg to about 40 mg of meloxicam, and about 5 mg to about 50 mg of the rizatriptan.
 20. The method of claim 1, wherein the oral dosage form contains the SBEβCD that is in a weight ratio to the rizatriptan that is within a range of about 1 to about
 100. 21. The method of claim 1, wherein the oral dosage form contains the SBEβCD that is in a weight ratio to the rizatriptan that is about
 10. 22. The method of claim 1, wherein the bicarbonate comprises sodium bicarbonate.
 23. The method of claim 1, wherein the oral dosage form contains 500 mg of sodium bicarbonate.
 24. The method of claim 1, wherein the oral dosage form has been shown to have a median T_(max) of meloxicam that is less than about 90 minutes in fasted human subjects.
 25. The method of claim 1, wherein the oral dosage form has been shown to have a median T_(max) of meloxicam that is less than about 2 hours in fasted human subjects. 